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Finding the Fourth Proportional to 168.96, 254.56 and 153.34

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Solution

The fourth proportional to 168.96, 254.56 and 153.34 is: 231.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.96 : 254.56 = 153.34 : x
  2. Step 2: Convert to fraction form
    168.96/254.56 = 153.34/x
  3. Step 3: Cross multiply
    168.96x = 254.56 × 153.34
  4. Step 4: Simplify right side
    168.96x = 39,034.28
  5. Step 5: Solve for x
    x = 39,034.28/168.96
  6. Step 6: Final answer
    x = 231.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.